Privacy Policy

What we collect

All calculator inputs and results are processed directly in your browser. We do not send the numbers you enter into a calculator to any server, and we do not store them.

Local preferences

Your light/dark mode preference is saved in your browser's local storage so the site remembers your choice on your next visit. This information stays on your device and is never transmitted to us.

Analytics

We may use privacy-respecting analytics to understand which calculators are most useful, so we can improve the site. Any such analytics does not identify you personally.

Cookies

This site does not use advertising or tracking cookies. Any cookies used are limited to essential site functionality.

Contact

If you have questions about this policy, please contact us through the website.